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2 Sheets-Sheet 1.

(No Model.)

B. N. GOLWELL.

METHOD OF MANUFACTURING DRAW HEADS.

No. 413,132. Patented Oct. 15, 1889.

vwamtoz 0 MW m m Q (No Model.) 7 2 Sheets-Sheet 2.

E. N. GOLWELL. METHOD OF MANUFACTURING DRAW HEADS. No. 413,132. Patented Oct. 15. 1889.

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W wmwm H I 499, (p My UNITED STATES PATENT OFFICE.

EVANDER N. OO'LIVELL, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO CHRISTIAN F. KENNEVVEG, OF SAME PLACE.

METHOD OF MANUFACTURING DRAW-HEADS.

SPECIFICATION forming part of Letters Patent No. 413,132, dated October 15,1889.

Application filed March 28, 1889- Serial No. 304,522. (No model.)

To all whom it may concern.-

Be it known that 1, EVANDER N. CoLwELL,

a citizen of the United States, residing at- Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in the Method of Manufacturing Draw-Heads; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a method of making draw-heads for railway-cars; and it has for its object to provide for the expeditious and economical manufacture of a draw-head of the desired configuration, as well as to secure the necessary strength and durability.

With these ends in View, and such others as pertain to my invention, it consists, in the manufacture of draw-heads, first, in cutting ablank from a single piece of metal having at one end two lateral wings, which are curved and shaped to approximate the contour of the draw-head, then bending the blank longitudinally on two substantially parallel lines to form one side, the top, and bottom of the embryonic draw-head, then bending the edges of the top and bottom, so that they meet each other, and, finally, uniting the-meeting edges together by welding to complete the remaining side of the drawhead, all as will be more fully hereinafter described and claimed.

As an understanding of my invention can be had to better advantage by a detailed description, I will now proceed to describe the blank and the manner of bending the same I, to make a draw-head in accordance with my invention, reference being had to the accompanying drawings, in which- Figure l is a plan view of the blank, the lines of bending to form the draw-head being indicated by dotted or broken lines. Fig. 2 is a perspective view showing the blank partly bent up. Fig. 3 is a similar view showing the condition of the draw-head before the meeting edges of the unfinished side are welded together and before the end piece and hinge-section are welded therein. Fig.

4 is a horizontal longitudinal sectional View of a completed draw head. Fig. 5 is an elevation taken from one side of the drawhead shown in Fig. 4. Figs. 6 and 7 are detail perspective views of the end piece and hinge-piece before they are united to the drawhead.

Like letters of reference denote correspond ing parts in all the figures of the drawings.

As is well known to those skilled in the art to which my invention relates, the common and most approved pattern of draw-heads now in use is constructed with an enlarged hollow chamber at the front end to receive 7 the swinging hooks of the coupler and with a reduced shank for the reception of the drawbar.

In my present invention I aim to construct a draw-head having the general outline or form above described; but my invention is distinguished from prior methods of making draw-heads, in that I utilize a single piece of metal which is so bent, shaped, or formed and welded that I can produce a superior article at a reduced cost and within less time than is required for making draw-heads. according to the present practice.

Referring now more particularly to Fig. 1

of the drawings, a designates the blank, which 7 is cut or stamped from a single piece of metal of the desired thickness and strength. In order to attain the contour of the draw-head shown in Figs. 4 and 5, I form this blank with two wings b b, which are located on opposite sides thereof and at the front end. These wings are curved at their edges from the front edge of the blank to a point about one-third of the length thereof, as at c, and from the terminals of these curved edges 0 of the Wings the side edges of the blank a are inclined in straight lines, as at d, toward each other, the inclination of said edges (1 being comparatively slight, in order to avoid tapering the shank of the draw-head too much. At the front edge of the blank and at short distances from a median line 6 through the blank I form tapering or inclined ears ff, the edge of the blank between said ears being cut or formed in a straight line, as at g, at right angles to the median line 6 of the blank. The two ears IOO nals of these obtuse-angled lines f the front edge of the blank is formed with approximately V-shaped recesses g, which extend from the terminals of ears to the wings I) Z). By giving the blank this peculiar configura tion a draw-head of the desired contour is sesides of and equidistant from the median line 6 of the blank. These score-lines cc and y extend from the terminals of the straight front edge g at the middle of the blank to the rear edge thereof; and at the sides of the blank a, parallel with the edges thereof, I have indicated by the score-lines z z the lines for bending the edges of the blank in order to form one side of the draw-head and complete the same, the bent edges formed by bending the blank along the lines 2 2 being manipulated to overlap each other and then welded together, as will presently appear.

Having prepared the blank in accordance with the foregoing description and as shown in Fig. 1, I now proceed to bend the blank in the manner shown in Fig. 2. The blank is first bent longitudinally along the line :0 and then along the parallel line y, which produces or forms an embryonic draw-head having the top H, one side 1', and the bottom j, the topand bottom H j being parallel with each other and the complete side 2' being at right angles to said top and bottom and integral with the same. In this stage of the operation of making the draw-head or bending the blank it will be noticed by reference to Fig. 2 that the inclined ears'ff project or extend beyond the side i of the embryonic draw-head, which side is formed by that part of the blank between the score-lines 00 y,- and in order to form the vertical flanges 6 at the front end of the drawhead the ears ff and the recessed edges 9 are bent at right angles to the plane of the top and bottom of the draw-head, thereby giving the front of the draw-head the peculiar configuration desired, which is indicated substantially in Figs. 4: and 5. The free edges of the top and bottom I-Ij of the blank or incomplete draw-head are now bent at right angles to the plane of said top and bottom along the scorelines .2 2', respectively, to form flanges m m, which are of such length that they overlap one another, substantially as indicated in Fig. 3, and these overlapping edges are now united together by welding, to form the remaining side 2" of the draw-head, the line of weld of said flanges being indicated at h, and it extends from the front to the rear end of the draw-head and midway of the side *6, as shown in Fig; 4:. It now only remains to complete the draw-head by uniting thereto the end piece 0 (shown in Fig. 6) and the hingepiece 19, (illustrated by the detail view, Fig. 7.)

The draw-head formed by the blank struck up and bent in accordance with the foregoing description, and illustrated in the accompanying drawings, has an enlarged front end possessing the peculiar configuration of the common well-known draw-head and the chamber for receiving the swinging hooks of the coupler, while the rear end of the said draw-head has an extended longitudinal shank, which is hollow and tapered slightly. The extreme rear end of this hollow shank is substantially circular in cross-section, and I propose to close said extreme rear open end by means of a disk or round plate 0, which is fitted and welded in the shank, said end piece or disk having a central aperture for the passage of the'draw-bolt into the drawhead.

In order to connect the swinging hook of the coupler to the draw-head in a safe and .expeditious manner, I also contemplate making the draw-headwith a hinge-piece p. (Illustrated in Fig. 7.) This hinge-piece is tapered at one end and enlarged at its other end, said tapered end being united to the draw-head, so that the enlarged rounded end will project beyond the front end of the drawhead, said enlarged rounded end of the hingepiece being formed with a vertical transverse opening to receive the pivotbolt or shaft, on which the swinging hook of the coupler turns. This hinge-piece is arranged on the solid side or wall d after draw-head, and said hingepiece may be united by welding to the drawhead after the blank has been bent to make the same; or the hinge-piece may be welded to the blank before the latter is bent up, as is obvious, the line of weld being indicated by the line q in Fig. 4.

It is evident to those skilled in the art that a draw-head of the desired configuration and having great strength and durability can be made at a reduced cost and in less time in accordance'with my improved method than by following the common practice.

As the mandrels and dies for bending and welding the blank do not form a part of my present invention, I have not deemed it necessary to illustrate and describe the same in the present application.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The method of making draw-heads, consisting, first, in cutting or forming a blank from a single piece of metal, then bending said blank longitudinally along two parallel lines to form one side, the top, and bottom of an embryo draw-head, then bending the edges of the top and bottom toward each other, and uniting the same together by welding, substantially as described, for the purpose set forth.

2. The method of making draw-heads, which consists, first, in cutting or forming a blank from a single piece of metal having the lateral wings I) b and the ears ff and the recesses g at its front edge, then bending said blank longitudinally in two parallel lines to form the top, bottom, and one side of the embryo draw-head, then bending the free edges of the top and bottom and welding the bent portions together, and, finally, bending the front edge of the blank along the ears ff and recessed edges g to form the vertical flanges, substantially as and for the purpose described.

3. The method of making draw-heads, Which consists, first, in cutting a blank from a single piece of metal, then bending the blank longitudinally in two parallel lines to form the bottom, top, and one side of the embryo drawhead, then bending the edges of the top and bottom to form the meeting flanges and Welding said flanges together to complete the remaining side of the draw-head, then uniting an end piece in the open rear end of the shank of the draw-head, and,.finally, welding a hinge-piece to one side of the draw-head, substantially as described, for the purpose set forth.

4. The method of making draw-heads, which consists,first, in cutting a blank fromasingle piece of metal having the straight edge g at its front edge, the ears ff on opposite sides of said straight edge, and the recesses, then bending the blank longitudinally in two parallel lines Which extend from the terminals of the straight edge g at the front of the blank to the rear end thereof, to form the bottom,

the top, and one side of the embryo drawhead, then bending the front edges of the top and bottom of the blank or embryo drawhead in opposite direct-ions to form the vertical flanges at the front of the draw-head, then bending the side edges of the top and bottom to form the meeting flanges, and, finally, Welding the side flanges together, substantially as described, for the purpose set forth.

5. A blank for use in making-draW-heads, struck up from a single piece'of metal and having the lateral Wings 1) b at its side edges near one end thereof, the recesses, the ears, and straight portion g at its front edge, and 45 the inclined side edges, substantially as described.

6. A blank for making draw-heads, struck up from a single piece of metal and. having the lateral wings I) b, the longitudinal scorelines equidistant from a median line drawn through the blank, and the score-lines along and parallel with the side edges of said blank, substantially as described.

In testimony that I claim the foregoing I 5 5 hereunto affix my signature this 20th day of February, A. D. 1889.

EVANDER N. COLWELL. [1,. s.]

In presenceof- P. B. REILLY, M. E. HARRISON. 

